At 08:42 AM 9/2/2003 +1200, Thomas Salmen wrote: >hmm, cheers > >any idea if there is any documentation regarding this? seems to me that with >all these sites these days mucking around with df bits and filtering icmp >that it's a wonder that any link with an odd pmtu works at all. not to >mention qos getting all upset with fragmented packets.
I don't believe there is any documentation per se. Essentially, if you operate a network and impose encap overhead to frames, you need to compensate for this overhead by increasing your supported mtu sizes. >thomas > > > > > > > At 10:37 PM 8/31/2003 +0000, Thomas Salmen wrote: > > >does anyone know if using frame-mode mpls affects the mtu on an > > interface? i > > >can't help thinking that sticking in an extra 32-bit header would mean > > >reducing the amount of user data that could be carried by 32 > > bits - causing > > >fragmentation if the data field is already at its max for a given > > >interface... > > > > MPLS headers, 802.1q tags and all similar encap overhead > > certainly add size > > to frames and are certainly things one needs to be mindful of from an mtu > > perspective. > > > > >apologies if the question is an inane one, but i'm just starting > > to get into > > >this ls thang > > > > > >thomas > > >**Please support GroupStudy by purchasing from the GroupStudy Store: > > >http://shop.groupstudy.com > > >FAQ, list archives, and subscription info: > > >http://www.groupstudy.com/list/cisco.html > > **Please support GroupStudy by purchasing from the GroupStudy Store: > > http://shop.groupstudy.com > > FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74625&t=74577 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
